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Finding the Fourth Proportional to 28,202.50, 38,919.72 and 15,627.52

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Solution

The fourth proportional to 28,202.50, 38,919.72 and 15,627.52 is: 21,566.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,202.50 : 38,919.72 = 15,627.52 : x
  2. Step 2: Convert to fraction form
    28,202.50/38,919.72 = 15,627.52/x
  3. Step 3: Cross multiply
    28,202.50x = 38,919.72 × 15,627.52
  4. Step 4: Simplify right side
    28,202.50x = 608,218,702.69
  5. Step 5: Solve for x
    x = 608,218,702.69/28,202.50
  6. Step 6: Final answer
    x = 21,566.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.